An anomalous hyperplastic anterior choroidal artery associated with an unruptured internal carotid–posterior communicating artery aneurysm |
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Authors: | Akio Nishino Kousuke Mori Yoshihiro Yano Takashi Koyama Kouichi Taniwaki Toshiaki Fujita Mamoru Taneda |
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Affiliation: | aDepartment of Neurosurgery, Kinki Central Hospital, 3-1 Kurumazuka, Itami-city, Hyogo 664-8533, Japan;bDepartment of Neurosurgery, Toyonaka Municipal Hospital, 4-14-1 Shibahara-cho, Toyonaka-city, Osaka 560-8565, Japan;cDepartment of Neurosurgery, Hanwa Memorial Hospital, 7-11-11 Karita, Sumiyoshi-ku, Osaka-city, Osaka 558-0011, Japan |
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Abstract: | The anterior choroidal artery (AChA) injuries can result in severe neurologic deficits, so requiring careful observation to avoid inadvertent damage during neuroendovascular procedures. In this case report, we present the unusual case of an anomalous hyperplastic AChA associated with a fetal-type posterior communicating artery (PCoA), and an unruptured internal carotid artery (ICA) –PCoA aneurysm. A 54-year-old woman presented with persistent headache. Brain magnetic resonance imaging (MRI) showed an unruptured cerebral aneurysm in the right ICA, and cerebral angiography revealed a proximal fetal-type PComA and a distal anomalous hyperplastic AChA. Coil embolization was performed with no neurologic deficits and the target lesion was embolized with a total of 6 coils. An anomalous hyperplastic AchA has a lengthy course with numerous choroidal and perforating branches, and therefore, an abundant perfusion region. Thorough knowledge of the development and anatomy of anomalous arteries is important for safely performing endovascular procedures without causing any ischemic complications. |
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Keywords: | Anterior choroidal artery Cerebral aneurysm Hyperplasia Endovascular surgery |
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